PT-2026-2696 · Microsoft · Windows Kerberos+1

Naveen · Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-20849

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows Kerberos (affected versions not specified)

Description A flaw exists in Windows Kerberos where reliance on untrusted inputs in a security decision can allow an attacker to elevate privileges on a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-807

Related Identifiers

BDU:2026-00372

CVE-2026-20849

Affected Products

Windows

Windows Kerberos

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20849 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20849 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20849 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20849 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-20849 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00372 · Security Note
• https://twitter.com/CVEnew/status/2011181523220017481 · Twitter Post